Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 4, Issue 10, Pages 5553-5560Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.6b01288
Keywords
Carbon dioxide; Propargylic amines; Copper(I); Density functional theory
Categories
Funding
- National Natural Science Foundation of China [21403060, 21133009]
- Program for Innovative Research Team in Science and Technology in University of Henan Province [16IRTSTHN002]
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Carbon dioxide (CO2) is an abundant and renewable feedstock for the production of high-value chemicals. Herein, CuI and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) were employed as an efficient catalyst system to synthesize 2-oxazolidinones through the coupling reaction of CO2, and propargylic amines. It was found that this cost-competitive catalyst system could efficiently catalyze the reaction within only 4 h at atmospheric pressure CO2, and a wide range of substrates were suitable for this reaction. Various target products were obtained in excellent yields. Furthermore, the catalytic mechanism of the CuI/DBU system was investigated by using density functional theory. It was shown that copper(I) and DBU played synergistic roles in activating both the C C triple bond and the amino group of propargylic amines in the reaction.
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